﻿using Microsoft.WindowsAzure.MobileServices;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.ApplicationModel;
using Windows.ApplicationModel.Activation;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
using System.Xml; //namespace to deal with XML documents 
using System.Xml.Linq; //namespace to deal with LINQ to XML classes 

namespace TelemetryMobileService
{
    /// <summary>
    /// Azure Mobile Service Configuration
    /// </summary>
    public class Config
    {
        public string Table;
        public string Service;
        public string AppKey;
    }

    /// <summary>
    /// Provides application-specific behavior to supplement the default Application class.
    /// </summary>
    sealed partial class App : Application
    {


        //////////////////////////////////////////////////////////////////////////////////////////////
        // This MobileServiceClient has been configured to communicate with your Mobile Service's url
        // and application key. You're all set to start working with your Mobile Service!
        //////////////////////////////////////////////////////////////////////////////////////////////

        // [1] Original 
        //public static MobileServiceClient MobileService = new MobileServiceClient(
        //    "https://telemetrymobileservice.azure-mobile.net/",
        //    "NtcMLPQtuAqWtvXOwrZVQtqHevNUnN27"
        //);

   
        // [2] Another service
        // Just change the service name and app key
        //public static MobileServiceClient MobileService = new MobileServiceClient(
        //"https://sportronicsTwo.azure-mobile.net/",
        //"NJmGaXFKMaOxvJEFxGhnEYeXpoKqOv10"
        //);

        //[3] Programmatic service configuration
        // Set in App() AFTER InitializeComponent call.
        public static MobileServiceClient MobileService;

        ///////////////////////////////////////////////////////////////////////////////////////////////

        /// <summary>
        /// Initializes the singleton application object.  This is the first line of authored code
        /// executed, and as such is the logical equivalent of main() or WinMain().
        /// </summary>
        public App()
        {

            this.InitializeComponent();

            // [3] Programmatic service configuration
            //////////////////////////////////////////////////////////////////////////////////////////

            //{A] Simple configuration
            //////////////////////////////////////////////////////////////////////////////////////////
            string table = "telemetry";
            string service = "https://telemetrymobileservice.azure-mobile.net/";
            string appKey = "NtcMLPQtuAqWtvXOwrZVQtqHevNUnN27";
         
           
            //[B] Get configuration from XML configuration file
            //////////////////////////////////////////////////////////////////////////////////////////
            // Should encrypt this
            XDocument doc = XDocument.Load("Config.XML");
            var configs = (from xElem in doc.Descendants("configuration")
                           select new Config
                           {
			       Table = xElem.Element("table").Value,
                               Service = xElem.Element("service").Value,
                               AppKey = xElem.Element("appKey").Value
                           }).ToList();

            // Should only be one configuration
            if (configs.Count == 1)
            {
                table = configs[0].Table;
                service = service.Replace("telemetrymobileservice", configs[0].Service);
                appKey = configs[0].AppKey;
            }


             MobileService = new MobileServiceClient(
                service,
                appKey
            );
            // End B ///////////////////////////////////////////////////////////////////////////////

            // End [3] /////////////////////////////////////////////////////////////////////////////

            this.Suspending += OnSuspending;

#if !WINDOWS_PHONE_APP
                RequestedTheme = ApplicationTheme.Light;    
#endif
        }

        /// <summary>
        /// Invoked when the application is launched normally by the end user.  Other entry points
        /// will be used such as when the application is launched to open a specific file.
        /// </summary>
        /// <param name="e">Details about the launch request and process.</param>
        protected override void OnLaunched(LaunchActivatedEventArgs e)
        {            

#if DEBUG
            if (System.Diagnostics.Debugger.IsAttached)
            {
                this.DebugSettings.EnableFrameRateCounter = true;
            }
#endif

            Frame rootFrame = Window.Current.Content as Frame;

            // Do not repeat app initialization when the Window already has content,
            // just ensure that the window is active
            if (rootFrame == null)
            {
                // Create a Frame to act as the navigation context and navigate to the first page
                rootFrame = new Frame();
                // Set the default language
                rootFrame.Language = Windows.Globalization.ApplicationLanguages.Languages[0];

                rootFrame.NavigationFailed += OnNavigationFailed;

                if (e.PreviousExecutionState == ApplicationExecutionState.Terminated)
                {
                    //TODO: Load state from previously suspended application
                }

                // Place the frame in the current Window
                Window.Current.Content = rootFrame;
            }

            if (rootFrame.Content == null)
            {
                // When the navigation stack isn't restored navigate to the first page,
                // configuring the new page by passing required information as a navigation
                // parameter
                rootFrame.Navigate(typeof(MainPage), e.Arguments);
            }
            // Ensure the current window is active
            Window.Current.Activate();
        }

        /// <summary>
        /// Invoked when Navigation to a certain page fails
        /// </summary>
        /// <param name="sender">The Frame which failed navigation</param>
        /// <param name="e">Details about the navigation failure</param>
        void OnNavigationFailed(object sender, NavigationFailedEventArgs e)
        {
            throw new Exception("Failed to load Page " + e.SourcePageType.FullName);
        }

        /// <summary>
        /// Invoked when application execution is being suspended.  Application state is saved
        /// without knowing whether the application will be terminated or resumed with the contents
        /// of memory still intact.
        /// </summary>
        /// <param name="sender">The source of the suspend request.</param>
        /// <param name="e">Details about the suspend request.</param>
        private void OnSuspending(object sender, SuspendingEventArgs e)
        {
            var deferral = e.SuspendingOperation.GetDeferral();
            //TODO: Save application state and stop any background activity
            deferral.Complete();
        }
    }
}
